Back to ippToPsps main page

Object batches

Object batches are generated from the IPP for objects that have set for the year and that have been fully processed by the IPP. Data is taken entirely from DVO FITS files, specifically:

• cpt file: contains ..., definition here​
• cps file: contains mean mags etc definition here​

One PSPS batch represents one DVO 'region', eg these files

s3000/7471.10.cps
s3000/7471.10.cpt

would be used to create an object batch for this DVO region.

PSPS tables

1 Object extension

The full table definitions can be seen here

Current IPP to PSPS mappings

Object
ODM attribute	units	Data type	Default	Description	IPP source	IPP variable/notes
objID	dimensionless	BIGINT	0	ODM object identifier index	cpt file	EXT_ID
ippObjID	dimensionless	BIGINT	0	IPP object number	cpt file	CAT_ID*1000000000 + OBJ_ID
projectionCellID	dimensionless	INT	-999	projection cell identifier at discovery time
htmID	dimensionless	BIGINT	0	HTM index		to be DROPPED from table
zoneID	dimensionless	INT	0	Zone index		to be DROPPED from table
stackVer	dimensionless	SMALLINT	-999 -	static stack version number
objInfoFlag	dimensionless	BIGINT	-999	flag indicating odd properties
varFlag qualityFlag	dimensionless	TINYINT	0	subset of objInfoFlag - flags related to goodness of object
surveyID	dimensionless	TINYINT	255	Survey ID	config	as set in the ippToPsps config
ra	degrees	FLOAT	0	Right Ascension	cpt file	RA - where this is the RA at the reference epoch. Defaults to RA in stack if not seen in frames
dec	degrees	FLOAT	0	Declination	cpt file	DEC - where this is the Dec at the reference epoch. Defaults to Dec in stack if not seen in frames
raErr	arcsec	REAL	0.0	Right Ascension error	cpt file	RA_ERR
decErr	arcsec	REAL	0.0	Declination error	cpt file	DEC_ERR
cx	unknown	FLOAT	0	Cartesian x		populated during PSPS merge
cy	unknown	FLOAT	0	Cartesian y		populated during PSPS merge
cz	unknown	FLOAT	0	Cartesian z		populated during PSPS merge
lambda	degree	FLOAT	-999	ecliptic longitude		populated during PSPS merge
beta	degree	FLOAT	-999	ecliptic latitude		populated during PSPS merge
l	degrees	FLOAT	-999	galactic longitude		populated during PSPS merge
b	degrees	FLOAT	-999	galactic latitude		populated during PSPS merge
nDetections	dimensionless	SMALLINT	-999	total number of detection measurements in all filters	cpt file	sum of NCODE for different filters in dvo
ng	dimensionless	SMALLINT	-999	number of measures in g filter	cps file	NCODE ("number of detections in band")
The block below is repeated for filters r, i, z, y and w
gMeanPSFMag	AB magnitudes	REAL	-999	mean g magnitude	cps file	MAG (the AB magnitude) (from exp,psf), set to null where MeanMagErr > 0.5
gMeanKronMag	AB magnitudes	REAL	-999	mean g kron mag from smfs	cps file	MAG_KRON mean kron mag from exp, psf
gMeanPSFMagErr	AB magnitudes	REAL	-999	estimated error of g magnitude mean (psf)	cps file	MAG_ERR
gMeanKronMagErr	AB magnitudes	REAL	-999	g mean Kron mag err	cps	MAG_KRON_ERR
g20pct	AB magnitudes	REAL	-999	minimum g magnitide	cps file	MAG_20/1000
g80pct	AB magnitudes	REAL	-999	maximum g magnitude	cps file	MAG_80/1000
end repeat of block
The block below is repeated for filters r, i, z, and y
gStackPSFMag	AB magnitudes	REAL	-999	g psf flux stack	cps file	~FLUX_PSF~ calculated from stackKronMag (AB mag) = -2.5 * log(FLUX_KRON) + 8.9
gStackPSFMagErr	AB magnitudes	REAL	-999	gstack psf flux err	cps	FLUX_PSF_ERR/FLUX_PSF -flux error for psf g stack measurements
gStackKronMag	AB magnitudes	REAL	-999	g kron magnitude from stack frames	cps	calculated from stackKronMag (AB mag) = -2.5 * log(FLUX_KRON) + 8.9
gStackKronMagErr	AB magnitudes	REAL	-999	g stack kron mag err	cps file	FLUX_KRON_ERR /FLUX_KRON
gFlags	dimensionless	SMALLINT	-999	g flags	cps	flags
gStackDetectID	dimensionless	BIGINT	-999	stackdetect id to map back to stackdetection table	cps or cpt	STACK_DETECT_ID
end repeat of block
qf_perfect	dimensionless	REAL	-999	qf_perfect	cpt	PSF_QF_PERFECT rename it qf_perfect
sgSep	dimensionless	REAL	-999	star/galaxy separator - true if any one color is	cpt	STARGAL_SEP is the max of the extNsigma values from the exposures (P2s)
consistencyFlag	dimensionless	SMALLINT	0	Value computed from associated detections, it is originally given by IPP and should agree with the ODM validation
Random	dimentionless	FLOAT	0	Random number between 0 and 1
dataRelease	Mean Julian Day	TINYINT	0	Data release
~updated~batchID	dimentionless	INT32	-999	batchID

Schema Change Plan (July 2012)